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Finding the Fourth Proportional to 127,605.99, 176,102.07 and 71,021.01

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Solution

The fourth proportional to 127,605.99, 176,102.07 and 71,021.01 is: 98,012.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,605.99 : 176,102.07 = 71,021.01 : x
  2. Step 2: Convert to fraction form
    127,605.99/176,102.07 = 71,021.01/x
  3. Step 3: Cross multiply
    127,605.99x = 176,102.07 × 71,021.01
  4. Step 4: Simplify right side
    127,605.99x = 12,506,946,874.49
  5. Step 5: Solve for x
    x = 12,506,946,874.49/127,605.99
  6. Step 6: Final answer
    x = 98,012.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.